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Author Topic: Engine almost dies when putting in gear  (Read 2816 times)

Offline Spoonbill

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Engine almost dies when putting in gear
« on: September 25, 2017, 02:28:15 PM »
Hey guys, me again. 87 r10 305 tbi 700r4. Truck is off, I start it up doesn't matter if I shift into drive or reverse, it will almost die. It stumbles until it catches itself. It doesn't matter if it is warmed up or not. Anyone have a clue as too what might be going on? Started doing this about 3 weeks ago and just getting worse
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Offline bd

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Re: Engine almost dies when putting in gear
« Reply #1 on: September 25, 2017, 03:11:55 PM »
Is the service engine soon (SES) light illuminating when the symptoms occur?  Last month you were going to have the ECM scanned for trouble codes.  Did you?  What codes were stored?
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Rich
It's difficult to know just how much you don't know until you know it.
In other words... if people learn by making mistakes, by now I should know just about everything!!!
87 R10 Silverado Fleetside 355 MPFI 700R4 3.42 Locker (aka Rusty, aka Mater)

Offline VileZambonie

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Re: Engine almost dies when putting in gear
« Reply #2 on: September 25, 2017, 05:40:10 PM »
and spray carb clean at the base of the TBI to see if it changes engine speed.
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              ⌠ŻŻŻŻŻ'   [☼===☼]
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74 GMC, 75 K5, 84 GMC, 85 K20, 86 k20, 79 K10

Offline Spoonbill

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Re: Engine almost dies when putting in gear
« Reply #3 on: September 25, 2017, 07:47:11 PM »
Had it scanned and no fault codes. Just replaced the tbi base gasket. No warning light is on except when you first turn the ignition.
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Offline Captain Swampy

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Re: Engine almost dies when putting in gear
« Reply #4 on: September 25, 2017, 09:21:20 PM »
The body of the TBI could be worn at the throttle shaft and leaking air though. Possibly EGR valve also.
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1987  350TBI 700R4  4X4  4.56 gears  33" BFG All Terrain


http://forum.73-87chevytrucks.com/smforum/index.php?topic=32209.0

Offline Spoonbill

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Re: Engine almost dies when putting in gear
« Reply #5 on: September 26, 2017, 03:13:41 PM »
Can't I just take the egr off??? Sprayed and no change in idle
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Offline VileZambonie

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Re: Engine almost dies when putting in gear
« Reply #6 on: September 26, 2017, 05:15:26 PM »
Pull the vacuum hose off of the EGR valve and plug it. See if the symptoms go away.
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,                           ___ 
                         /  _ _ _\_
              ⌠ŻŻŻŻŻ'   [☼===☼]
              `()_);-;()_)--o--)_)

74 GMC, 75 K5, 84 GMC, 85 K20, 86 k20, 79 K10

Offline burnze

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Re: Engine almost dies when putting in gear
« Reply #7 on: September 26, 2017, 06:42:19 PM »
Have you checked fuel pressure?
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84 chevy blazer
87 r10 short box

Offline Spoonbill

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Re: Engine almost dies when putting in gear
« Reply #8 on: September 27, 2017, 08:15:47 AM »
Haven't checked fuel pressure. What is the easiest way to check it?
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Offline Spoonbill

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Re: Engine almost dies when putting in gear
« Reply #9 on: September 28, 2017, 01:50:36 PM »
Anyone have an idea on this? It is acting like manual when the clutch isn't releasing all the way. All I need is a direction to head but I have never heard of this. Thanks
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